Spot facing jig



Feb. 22, 1949. l WALLER 2,462,147

SPOT FACING JIG Filed Dec. 10, 1945 INVEN W///ld/77 7W BY W Patented Feb. 22, 1949 UNHTED STATES PATENT @FHCE (Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) 3 Claims.

This invention relates to a jig for performing spot-facing operations.

An object of this invention is to provide a jig for performing spot-facing operations which is portable, simple in construction, and easy to operate.

Another object is to provide a spot-facing jig which can be used so that the depth of out can readily be ascertained.

Further objects and advantages of this invention, as well as its construction, arrangement and operation, will be apparent from the following description and claims in connection with the accompanying drawings, in which Fig. 1 is a cross-sectional elevation of the spotfacing jig, through the longitudinal center-plane thereof, and

Fig. 2 is a partial view showing one end of the rotary spindle and spot-face cutter.

The drawings illustrate a preferred embodiment of the invention. The jig comprises the base I in the form of a fiat plate. Attached to the plate, as by welding, and normal thereto is a sleeve H which is threaded at its upper end as at l2. A circular aperture I3 is provided in the plate H] for the reception of a spindle M which in turn is also located in the sleeve H. Attached to the spindle It adjacent the free end of sleeve l I is a collar l5 of a diameter larger than the sleeve Ii. Collar i5 is fixed to spindle M by a set screw it. Threaded on the sleeve II is a nut I! which has a handle l8.

One end of the spindle it has a tapered shank 2B for connection to a portable air motor or other power source, while the other end of the spindle M has a slot 2| which receives a spot-face cutter 22, the cutter 22 being held rigidly in place by means of set screws 23.

In the operation of the device the plate I is clamped to the work 38 by means of clamps 24 and the spindle I l inserted into the sleeve H, aperture l3 and the bore 3! of the work 30. The collar I is then fixed to the spindle I4 at a suitable position by means of the set screw IS. The cutter 22 is then inserted into the slot 2| and fixed into position by means of the set screws 23. Finally the air motor or other power source is connected to the spindle It at 20. With the spindle I4 rotating, the handle I8 is used to rotate the nut ll which thereby exerts a force on the collar I5 which in turn moves the spindle l4 normal to the work 30 and forces the cutter 22 against the work 32. The depth of cut may be readily ascertained by measuring the distance between the plate It and the nut l7.

It is to be understood that various modifications and changes may be made in this invention without departing from the spirit and scope thereof as set forth in the appended claims.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

What is claimed is:

l. A jig comprising a support, the support be-- ing apertured, a journal on the support, a spindle within the aperture of the support and journal, an adjustable stop on the spindle, screw threads on said journal, and a nut operable cooperatively therewith to move said stop and spindle longitudinally in the journal.

2. A jig comprising a support, an aperture in the support, a sleeve on the support in registry with the aperture, 9, spindle in the sleeve and aperture, a collar on the spindle adjacent one end of the sleeve, the sleeve being threaded, a nut on the threaded sleeve in abutting engagement with the collar, and a handle on the nut.

3. A jig comprising a flat plate, an aperture in the plate, a sleeve fixed to the plate and normal thereto, the sleeve being threaded on its exterior surface, a spindle in the sleeve and aperture and extending beyond both, a collar of larger diameter than the sleeve on the spindle and adjacent to the sleeve, a set screw in the collar for fixing it to the spindle, a nut threaded on the sleeve, a handle on the nut, the nut engaging the collar, whereby when the nut is rotated on the spindle it will move correspondingly, the spindle having a transverse slot at one end thereof, a cutting tool in the slot, a set screw in the spindle for holding the cutting tool in the slot, the other end of the spindle being constructed and arranged for connection to a power source.

. WILLIAM T. WALLER.

REFERENCES, CITED The following references are of record in the Name Date Clay Jan. 19, 1926 Number 

